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Ideally, the telescope pointing should be properly zeroed before you start your run. After slewing to your target, ou you should be able to see it in the guide camera. If you are unable to see your target in the guide camera after slewing, you probably need to reset the zero of the pointing.
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TCS software does not properly take into account proper motions for any stars besides those in the FK5 catalog. Do not use any other of the catalogs stored in TCS when selecting a star to zero the telescope pointing on!
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Select Next -> Star -> FK5 and enter the star number in the FK5 catalog.
Select Next -> FK5 Stars Near Zenith then click on a star near the zenith.
Enter RA & Dec. of a star with the current epoch (NOT J2000) so that you can be sure to be pointing at a star, even if it has high proper motion. These coordinates can be taken from The Astronomical Almanac for the current year
Alternatively, you can use any other bright star with low proper motion and known coordiantes. Ensure that the coordinate and epoch are consistant or you may induce a larger offset than you intended to remove.
Slew telescope to target star.
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On TCS, if CZero is not =0 in RA and Dec., select the following: CZero -> New HA/DEC cos(dec) Zero Points. Warning: Do not select Default HA/Dec cos(Dec) zero points, this will not update CZero but set the value in TCS to 0, and you will continue have trouble pointing the telescope.
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